%T Role Definition Language (RDL): A Language to Describe Context-Aware Roles %A Christopher P. Masone %R Technical Report TR2002-426 %I Dartmouth College, Computer Science %C Hanover, NH %D May 2002 %U http://www.cs.dartmouth.edu/reports/TR2002-426.ps.Z %X As wireless networks become more prevalent, a widening array of computational resources becomes available to the mobile user. Since not all users should have unrestricted access to these resources, a method of access control must be devised. In a context-aware environment, context information can be used to supplement more conventional password-based access control systems. We believe the best way to achieve this is through the use of Context-Aware Role-Based Access Control, a model in which permissions are assigned to entities called roles, each principal is a member of one or more roles, and a role's membership is determined using context information. We designed and implemented RDL (Role-Definition Language), a simple, expressive and somewhat extensible programming language to facilitate the description of roles in terms of context information. %Z Senior Honors Thesis. Advisor: David Kotz.